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Java > Open Source Codes > net > killingar > webwork > view > taglib > DateTag


1 /* Copyright 2000-2005 Anders Hovmöller
2  *
3  * The person or persons who have associated their work with
4  * this document (the "Dedicator") hereby dedicate the entire
5  * copyright in the work of authorship identified below (the
6  * "Work") to the public domain.
7  *
8  * Dedicator makes this dedication for the benefit of the
9  * public at large and to the detriment of Dedicator's heirs
10  * and successors. Dedicator intends this dedication to be an
11  * overt act of relinquishment in perpetuity of all present
12  * and future rights under copyright law, whether vested or
13  * contingent, in the Work. Dedicator understands that such
14  * relinquishment of all rights includes the relinquishment of
15  * all rights to enforce (by lawsuit or otherwise) those
16  * copyrights in the Work.
17  *
18  * Dedicator recognizes that, once placed in the public
19  * domain, the Work may be freely reproduced, distributed,
20  * transmitted, used, modified, built upon, or otherwise
21  * exploited by anyone for any purpose, commercial or non-
22  * commercial, and in any way, including by methods that have
23  * not yet been invented or conceived.
24  */
25
26 /**
27  * Get a date from the ValueStack and format it in a nice way. Defaults to "yyyy-MM-dd" format.
28  */
29
30 package net.killingar.webwork.view.taglib;
31
32 import javax.servlet.jsp.JspException JavaDoc;
33 import javax.servlet.jsp.JspTagException JavaDoc;
34 import java.text.SimpleDateFormat JavaDoc;
35 import java.util.Date JavaDoc;
36
37 public class DateTag extends webwork.view.taglib.WebWorkTagSupport
38 {
39     // Attributes ----------------------------------------------------
40 protected String JavaDoc valueAttr;
41     protected String JavaDoc formatting; //= "yyyy-MM-dd"; // "EEE' 'MMM' 'dd' 'HH:mm"
42 protected SimpleDateFormat JavaDoc formatter = new SimpleDateFormat JavaDoc();//formatting);
43
44     // Public --------------------------------------------------------
45 public void setValue(String JavaDoc inName) { valueAttr = inName; }
46     public void setFormat(String JavaDoc inFormatting) { formatting = inFormatting; formatter = new SimpleDateFormat JavaDoc(formatting); }
47
48     // BodyTag implementation ----------------------------------------
49 public int doStartTag() throws JspException JavaDoc
50     {
51         try
52         {
53             Date JavaDoc value = (Date JavaDoc)findValue(valueAttr);
54
55             if (value != null)
56             {
57                 if (formatting != null)
58                 {
59                     formatter.applyPattern(formatting);
60                     pageContext.getOut().write(formatter.format(value));
61                 }
62                 else
63                 {
64                     pageContext.getOut().write(net.killingar.Utils.formatShortDate(value, " "));
65                 }
66             }
67         }
68         catch (Exception JavaDoc e)
69         {
70             e.printStackTrace();
71             throw new JspTagException JavaDoc("Could not show value " + valueAttr + ":" + e);
72         }
73
74         return SKIP_BODY;
75     }
76 }
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